Mike, I will answer your value question this way. Four Grain 'was' worth the $100 I paid. I wanted to try the FG, liked it very much for its unique qualities, and will enjoy it again from time to time.
Would I buy another at this price? I won't know that until I have finished this bottle, which will take a while. I put FG in a special occasion category along with a few other spirits. I drink them only once in a while when the right mood strikes me. I always enjoy them a lot when I do have a sip, but it is not very often.
An example of this is Crown Royal XR, ($150). I did buy another bottle of this to have for those occasions when it seems just the right thing.
Do not go gentle into that good night,
Old age should burn and rage at close of day;
Rage, rage against the dying of the light. - Dylan Thomas